Fiat 500 Collision Awareness Manual page 26

26 COLLISION INFORMATION
inspection. All other vehicle components should be closely inspected following any SRS component deployment, but
are to be replaced only as required by the extent of the visible damage incurred.
SQUIB CIRCUIT WIRING REPAIRS
In addition to the preceding guidelines, be aware that the heat created by the initiator during an airbag or tensioner
deployment will cause collateral damage to the connected wiring (squib circuits) and connector insulators. There are
two methods by which an airbag or seat belt tensioner may be connected to the vehicle electrical system. The first
method involves a short pigtail harness and connector insulator that are integral to the airbag or tensioner unit and are
replaced as a unit with the service replacement airbag or seat belt tensioner. This connection method typically requires
no additional wiring repair following a deployment.
However, the second connection method involves a wire harness takeout and connector insulator that are connected
directly to the airbag or tensioner initiator or squib. These direct­connect type take outs and connector insulators MUST
be repaired following an airbag or seat belt tensioner deployment using the approved Supplemental Restraint System
Wiring Repairs procedure. (Refer to Service Manual Section 10 ­ Restraints ­ Standard Procedure).
AIRBAG SQUIB STATUS
Multistage airbags with multiple initiators (squibs) must be checked to determine that all squibs were used during the
deployment event. The driver and passenger airbags in this vehicle are deployed by electrical signals generated by the
Occupant Restraint Controller (ORC) through the driver or passenger squib 1 and squib 2 circuits to the two initiators in
the airbag inflators. Typically, both initiators are used and all potentially hazardous chemicals are burned during an airbag
deployment event. However, it is possible for only one initiator to be used; therefore, it is always necessary to confirm
that both initiators have been used in order to avoid the improper handling or disposal of potentially live pyrotechnic or
hazardous materials. The following procedure should be performed using a diagnostic scan tool to verify the status of
both airbag squibs before either deployed airbag is removed from the vehicle for disposal.
CAUTION: Deployed front airbags having two initiators (squibs) in the airbag inflator may or may not have live
pyrotechnic material within the inflator. Do not dispose of these airbags unless you are certain of complete
deployment. Refer to the Hazardous Substance Control System for information regarding the potentially haz­
ardous properties of the subject component and the proper safe handling procedures. Then dispose of all
non­deployed and deployed airbags and seat belt tensioners in a manner consistent with state, provincial, local
and federal regulations.
1. Be certain that the diagnostic scan tool contains the latest version of the proper diagnostic software. Connect the
scan tool to the 16­way Data Link Connector (DLC). The DLC is located on the driver side lower edge of the instru­
ment panel, outboard of the steering column.
2. Turn the ignition switch to the ON position.
3. Using the scan tool, read and record the active (current) Diagnostic Trouble Code (DTC) data.
Using the active DTC information, refer to the Airbag Squib Status table to determine the status of both driver and
passenger airbag squibs.
IF THE ACTIVE DTC IS:
Driver or Passenger Squib 1
open
Driver or Passenger Squib 2
open
Driver or Passenger Squib 1
open
Driver or Passenger Squib 2
open
Driver or Passenger Squib 1
open
Driver or Passenger Squib 2
open
AIRBAG SQUIB STATUS
CONDITIONS
AND the stored DTC minutes for both Driver or
Passenger squibs are within 15 minutes of each
other
AND the stored DTC minutes for Driver or
Passenger Squib 2 open is GREATER than the
stored DTC minutes for Driver or Passenger Squib
1 by 15 minutes or more
AND the stored DTC minutes for Driver or
Passenger Squib 1 open is GREATER than the
stored DTC minutes for Driver or Passenger Squib
2 by 15 minutes or more
2012 FF
SQUIB STATUS
Both Squib 1 and 2 were used.
Squib 1 was used; Squib 2 is
live.
Squib 1 is live; Squib 2 was
used.